Although settlement negotiations and offers are inadmissible (i) to show the validity or invalidity of a claim when validity is in dispute, (ii) to show the amount of damages when the amount is in dispute, or (iii) to impeach by showing a prior inconsistent statement or specific contradiction, settlement evidence is admissible if it is offered on the issue of costs or wen it is offered to counter a claim of undue delay.

Cf. United States v. Jackson, 208 F.3d 633, 637 (7th Cir. 2000) (upholding trial court's exclusion of internet postings as a hearsay exception under Federal Rule of Evidence 803(6) as business records of the supremacy....There is a hearsay exception for a memorandum, report, record, or data compilation, in any form, of acts, events, conditions, opinions, or diagnoses, made at or near the time by, or from information transmitted by, a person with knowledge, if kept in the course of a regularly conducted activity of a business, institution, association, profession, occupation, or calling if it was the regular practice of that business, institution, association, profession, occupation, or calling to make the memorandum, report, record or data compilation, unless the source of information or the method or circumstances of preparation indicate lack of trustworthiness.

United States v. Yakobowicz, 427 F.3d 144, pin? (2d Cir. 2005) (in this interesting case a panel of the Second Circuit discusses at length interim summaries or summations in criminal trials and explains, at length, why it thinks such summaries are in general suspect in...Argumentative interim summaries or summations are impermissible.

Ronda-Perez v. Banco Bilbao Vizcaya Argentaria, 404 F.3d 42, 47 (1st Cir. 2005) (holding, in plaintiff bank manager's age discrimination action against defendant employer bank, that evidence of offer of payment to settle the claim was....Settlement offers and statements made during settlement negotiations are inadmissible if such offers and statements are offered to (i) show the validity or invalidity of a claim when the validity of the claim is in dispute, (ii) show the amount of damages when the amount of the claim is in dispute, or (iii) to impeach a witness by showing a prior inconsistent statement or specific contradiction.